Re: Unexpected result from -[super respondsToSelector:]

FROM : Jens Alfke
DATE : Sat Feb 16 17:46:10 2008

On 15 Feb '08, at 10:03 PM, Jerry Krinock wrote:

> But what's more surprising is that -respondsToSelector doesn't work 
> as expected when sent to super.


This does not tell you whether your superclass responds to a selector. 
It calls the superclass's _implementation_ of -respondsToSelector:. 
Which is the same as calling [self respondsToSelector:], unless your 
class overrides -respondsToSelector: itself.

"super" calls are a slippery concept, but this isn't a bug in -
respondsToSelector: or an Obj-C issue. People have been getting 
confused about this in dynamic OO languages all the way back to 
Smalltalk-72 :)

—Jens_______________________________________________

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